Baldur's Gate 3's temporary inability to fast travel is solved in different ways. First, players save when doing tasks. After the save is completed, it can be solved in different ways.
Players can choose a normal character when traveling quickly and enter the game to travel normally.
If the character used by the player is a bug character, he can directly use push to solve it quickly.
Note that you must save in time during the game. Only after the save is completed, you can enter the game again.
You can travel normally after waiting for the bug to be fixed, or you can kill the protagonist at the trap location.